Ost head/taillights. Changed stator and Extra yellow stator wire

So I couldn't find a thread, sorry my Harley friends. I have a vitacci rocket 150, it's a mini street bike.... I just changed the stator from an 8 pole to an 11 pole. My headlights aren't working. It's hooked up right and is charging my bike but the headlights... so when I switched the stator, the old on had 3 wires, the new one has 4. Went from 2 positives and ground to 3 positive and ground. Could it be because that extra yellow wire that IS getting power but bot feeding anything? And if that's the problem to my head/tail lights, can I just run the extra wire in with one of the other yellow wire? Ty in advance. Think I know the answers already but